About: http://webisa.webdatacommons.org/243713098

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Such a tractor mechanism is especially useful when objects such as logging tools and other well tools are to be moved through highly deviated or horizontal well sections, where gravity assistance is not available or has minimal effect.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com